JP2605824Y2 - Torque transmission device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a torque transmission device. The torque transmission device according to the present invention is mounted between rotating members to transmit rotational torque and absorb vibration or noise, and is used for a gear transmission device such as a transmission of an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 5, a known torque transmitting device 21 is formed by bonding a rubber-like elastic body 23 to one core 22 by vulcanization and bonding the core 22 through a sleeve 41, for example. The rubber-like elastic body 23 is fixed to the rotating shaft 42 and the gear 4
3, and the frictional resistance between the rubber-like elastic body 23 and the gear 43 transmits torque and absorbs vibration or noise. The gear 43 is rotatably supported by the sleeve 41 via a needle roller 44.

[0003]

In the above-mentioned conventional torque transmission device, the rubber-like elastic body 23 is substantially formed by the gear 43.
And slide strongly. Therefore, there is a problem that the rubber-like elastic body 23 gradually wears, and the magnitude of the transmitted torque is changed at an unexpected location.

[0004]

SUMMARY OF THE INVENTION In view of the above, the present invention has been devised in order to solve the above-mentioned problems in the prior art. Rotate from one rotating member to the other
A torque transmission device for transmitting torque, wherein the one of the one
A first core fixed to a rotating member, and the other rotating portion;
The second core bar fixed to the material has a substantially L-shaped cross section.
Formed and rotatably combined with each other
And the first seal bonded to the first metal core is
The second metal core is slidably in close contact with the second metal core, and
The second seal bonded to the core slides on the first core
Freely close, surrounded by each core and each seal
Filled with liquid having a predetermined viscous resistance.
To provide a torque transmission device according to claim is. According to a second aspect of the present invention, there is provided the torque transmission device according to the first aspect, wherein a frictional resistance increasing portion for increasing a frictional resistance with the liquid is provided on an inner surface of the cored bar. provide.

[0005]

When one of the rotating members rotates while the first core is fixed to one rotating member and the second core is fixed to the other rotating member, a rotation like a rubber-like elastic body in the prior art occurs. Although there is no sliding wear portion, torque is transmitted from one rotating member to the other rotating member via the first metal core, the liquid, and the second metal core. The magnitude of the frictional resistance between the mandrel and the liquid is appropriately adjusted at the time of manufacturing the torque transmission device according to use conditions and the like, but a predetermined size is provided on the inner surface of the mandrel as in claim 2. Alternatively, it can be easily adjusted by providing a frictional resistance expanding portion having a shape, or by enclosing a liquid having a predetermined viscous resistance.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

As shown in FIG. 1, first and second cores 2 and 3 each having a substantially L-shaped section are combined concentrically and relatively rotatably. A rubber-like elastic material vulcanized and bonded to the inner peripheral end of the second metal core 3 while a first seal 4 made of rubber-like elastic material and vulcanized and bonded to the outer peripheral end is in close contact with the second metal core 3. A second seal 5 made of a metal is in close contact with the first metal core 2 and an annular sealed space 6 is provided between the first and second metal cores 2 and 3. Is filled with the liquid 7 having the viscous resistance.
On the inner surface of the second metal core 3, a frictional resistance increasing portion 8 for increasing the frictional resistance with the liquid 7 is attached as a separate component.

As shown in FIG. 2, when the first shaft 2 is fixed to the rotating shaft 42 via the sleeve 41 and the second shaft 3 is fixed to the gear 43, the rotating shaft 42 rotates. The torque is transmitted from the rotating shaft 42 to the first metal core 2 via the sleeve 41, and further, the frictional resistance between each of the metal cores 2, 3 and the liquid 7 causes the liquid 7 and the second core to be separated from the first metal core 2. It is transmitted to the gear 43 via the gold 3. Accordingly, although there is no sliding wear portion such as the rubber-like elastic body 23 in the related art, it is possible to transmit the torque. Can be prevented from being changed on an unplanned size. The seals 4 and 5 in the torque transmitting device 1 are combined with each other so that the first and second cores 2 and 3 are not disassembled without permission, and have a close force (tightening margin) as long as the liquid 7 can be sealed. It is in close contact with the first or second metal cores 2 and 3, and does not strongly press against the mating material as in the case of the rubber-like elastic body 23 in the prior art, with the primary purpose of transmitting torque. Therefore, the sliding wear caused by the operation of the seals 4 and 5 does not pose any problem at the level of the object to be achieved by the present invention.

The magnitude of the frictional resistance between the cores 2 and 3 and the liquid 7 is appropriately adjusted at the time of manufacturing the torque transmission device 1 according to the use conditions and the like. By providing a frictional resistance magnifying portion 8 having a size or shape, or by enclosing a liquid 7 having a predetermined viscous resistance, it is possible to easily adjust the size. The pod shape is not limited and is determined purposefully. In this regard, the enlarged frictional resistance portion 8 shown in FIG. 1 is an annular body having a rectangular cross section and no irregularities as shown in FIG. In order to increase the frictional resistance, the frictional resistance can be increased, but may be divided in the circumferential direction as shown in FIG. Further, it may be a wing shape. Further, they may be formed integrally with the cores 2 and 3, or may be provided on both the first and second cores 2 and 3.

[0010]

[Effects of the Invention] The present invention has the following effects. That is, where common to claims 1 and 2, of one
The first core fixed to the rotating member and the other rotating member
The second metal core to be fixed is formed to have a substantially L-shaped cross section.
And are combined so that they can rotate relative to each other.
The first seal bonded to the first metal core is
Slidably in contact with the second core
The second seal is slidably in contact with the first metal core,
Predetermined viscosity in the sealed space surrounded by each cored bar and each seal
It is a configuration filled with a liquid having resistance, and the frictional resistance between each core and the liquid causes the liquid to flow from one of the cores through the liquid.
Although the torque is transmitted to the other metal core, the torque can be transmitted despite the fact that there is no sliding wear part such as the rubber-like elastic body in the prior art. Thus, it is possible to prevent the magnitude of the transmitted torque from changing at an unexpected location. Further, with the above configuration, each of the sections is formed in a substantially L-shaped cross section.
The first and second cores that have been formed are combined like a tom
At the same time, one seal is adhered to each core
The simple structure has reduced the number of parts
Two (excluding liquid) are set. Therefore,
Assembly space can be reduced,
And easy assembling work, further reducing cost
It is possible to deal with Further, by providing a frictional resistance enlarged portion having a predetermined size or shape on the inner surface of the core metal as described in claim 2, or by enclosing a liquid having a predetermined viscous resistance, each core metal and the liquid are sealed. Since the frictional resistance can be easily adjusted, it is possible to easily procure products according to demand. Especially provided on the inner surface of the cored bar
When the frictional resistance enlarged part is an annular body with no uneven surface
Rotation balance is good.
No installation is required, production is easy, and parts cost is low.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a torque transmission device according to an embodiment of the present invention.

FIG. 2 is a half sectional view showing a mounted state of the torque transmission device.

FIG. 3 is a cross-sectional view of the torque transmission device cut at right angles to a center axis.

FIG. 4 is a cross-sectional view of the torque transmission device according to another embodiment of the present invention, which is cut at right angles to a center axis.

FIG. 5 is a half cut sectional view showing a mounted state of a torque transmission device according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Torque transmission device 2, 3 Core metal 4, 5 Seal 6 Sealed space 7 Liquid 8 Friction resistance enlargement part 41 Sleeve 42 Rotation shaft 43 Gear 44 Needle roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16D 35/00 F16D 57/00 F16F 15/16 F16H 55/14

Claims (2)

(57) [Scope of request for utility model registration] (1)Rotation from one rotating member (41) to the other
Torque transmission device for transmitting rotational torque to member (43)
(1) A first metal core fixed to the one rotating member (41)
(2) and a second fixing member fixed to the other rotating member (43).
The two metal cores (3) are each formed in a substantially L-shaped cross section.
Are combined so that they can rotate relative to each other, A first seal (4) adhered to the first metal core (2);
Is slidably in contact with the second metal core (3) and
A second seal (5) adhered to the second metal core (3)
Is slidably in contact with the first metal core (2), For each of the metal cores (2) and (3) and the seals (4) and (5)
Liquid with predetermined viscous resistance in enclosed enclosed space (6)
(7) is satisfied Torque transmission device characterized by that
Place. 2. The torque transmission device according to claim 1, wherein a frictional resistance increasing portion (8) for increasing frictional resistance with the liquid (7) is provided on an inner surface of the metal core (2) (3). A torque transmission device characterized by the above.